Composite wear-resistant casting parts and non-medium double-liquid three-dimensional compound casting technique thereof

Abstract

The invention discloses a composite abrasion-resistant casting and medium-free biliquid solid composite casting technology thereof. The technology adopts molten steels with two different performances and efficacies of strong-toughness materials and high-hardness materials, and performs casting and composition in turn to form a structure according to the sequence. The technology can adjust the specific gravity of the two types of molten steels in workpieces and the dimension proportion of the structure according to the requirements of different workpieces, can adjust the casting sequence of the two types of molten steels according to different structures of the workpieces, and can also design and adjust the physico-chemical indexes of the two materials according to the industrial and mining conditions of the workpieces. Moreover, the technology makes finished pieces not only have high toughness but also have strong abrasion resistance, and effectively solves the problems of single material and incapability of having both strong toughness and strong abrasion resistance in the prior finished pieces; and the products are suitable for abrasion-resistant spare part products in grinding equipment in the fields of cement, electric power, mining, and the like.

Description

technical field [0001] The invention relates to the field of product casting, in particular to a wear-resistant casting and its pouring process, that is, a medium-free two-liquid three-dimensional composite pouring process. Background technique [0002] At present, the manufacture of wear-resistant castings is generally cast from a single metal, so that the processed castings have high hardness, but their toughness is poor; some wear-resistant castings have been adjusted to improve their toughness, but their hardness is poor. The contradiction between toughness and hardness (wear resistance) affects the service life of wear-resistant castings to a certain extent. The prior art reports that composite wear-resistant castings are manufactured using a medium bimetallic casting process. This type of composite wear-resistant castings ensures the excellent wear resistance of the wear-resistant part and also has the advantage of strong overall toughness. However, the wear-resistant ...

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Problems solved by technology

[0002] At present, the manufacture of wear-resistant castings is generally cast from a single metal, so that the processed castings have high hardness, but their toughness is poor; The contradiction between toughness and hardness (wear resistance) affects the service life of wear-resistant castings to a certain extent

The prior art reports that composite wear-resistant castings are manufactured using a medium bimetal casting process. This type of composite wear-resistant castings ensures excellent wear resistance of the wear-resistant part and also has the advantage of strong overall toughness. However, the wear-resistant castings produced by this process The composite strength of the casting is not high, and the composite area is only 80%, so there are still great safety hazards in the use of its parts, so it can only be used for wear-resistant castings in a static state, such as liners, while moving Wear-resistant castings such as hammer heads are not applicable

[0003] There is no report on the related technology of using the medium-free two-liquid three-dimensional composite casting process to manufacture composite high-wear parts

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